Manufacture of articles from fused material.



PATENTED OUT. 10, 1905.

E. HART v MANUFACTURE OF ARTICLES FROM-PUSED MATERIAL.

APPLICATION lILED Ill-10.4. 1902.

WITNESSES:

" e it.

.llppliestlon filed December To It whom it may concernit known that l,llowxuwllmrr, s.

zen oi thellnitcd Stntes, residing st ltlsston,

county oi Northampton, State of Pennsylvania, have invented certain newand useful Improvements in the Manufscture of Ar icles fromFusihleMateriel, of which the toll is c Specification.

My invention relates to the manufacture of articles consistin ofmaterial which hecomes fusible or at soft and plastic st hightemperatures, and particularly of arti- 0162 made of a material. whichis re rectory and resistant to the influence of ecic s. I.

My invention has especial reference to the manufacture oi hollowarticles used in. chemicsl works, containers acids or for suitsundergoing reaction.

The invention consists in a particular 181lner of nienufz'icturing sucharticles whereby one portion the article is '5 t formed and theremainder of the article is then gradually added or built up upon thelounclction previously prepared this procedure beini accompztnied by theapplication. of heat to ruse and.

soften the added material, as will be full" lescribed hereinafter endspecifically pointed out in the claims.

Two of the many terms of apparatus suituhlc f or cam-yin out myinvention shown in the accompanying drawings, in WlllGl1- Figure l is asectional elevation of one form of the apparatus on line 1 i of Fig. 2.rig. 2 is i plan of this apparatus, and. Fig. 3 is a sectional elevationoi the other form of the apparatus.

in Figs. 1 and 2, Ainclicstes a mold made of carbon, or it might bemotel-lined with graphite or other suitable material, the re quirementsbeing simply that the material for the mold. should not enter intodisturbing reaction with the raw material that is to he formed into thearticle, her'einal'ter clescriheil. The said mold, or at least the.inner or upper surfuce thereof, is electrically connected with itconductor B. The apparatus is completed by an electrode (1, mode olccrbon orothersuitsblc niateriul, which is adept- I ed to form (L11clcbotween the electrode and the mold when those ports are connecterhwith the terminals of it dynamo or other source cl electricity. Theelectrode (3 should he u ovul le, so that the arc may be formedSpecification of various points of the mold end so that th the electrodeC cml 1e mold A the clcctorle position, slim Quart/3 or the like, is

being the central that the mound i105 velo'oed in the area high y heatedv ll intlicuting on inc rial (loos ticslly p given to ring forn'ied stonne central core, l in the lllOlL at 0'' side of such lounil and incontact therewith l'urtlici' amount of loose material of the somecharacter ml move the electrode C to one side, so that the src will novaenvelop the newly-added me.- tericl. This nntterinl will then be fusedor softened in the sto e manner as above (lescrihcd sou will becomefirmly united with the core or foundation to form :1 1 iogeneous mosstherewith. Then lurther loose materiel erlileii eat an siljacent pointoi the periphery oi tile foo tion or core, and c is shifted, and thisprohc inoteriul l ucoorrling to the niennerof adding the loose imitoriuland moving the are Thus l nu produce dishes with o circuhir edge, or t;c form of the edge may be varied considerably.

KOO

to shift the ore from place to place.

The apparatus shown in Fig. 3 comprises a. mold A, which in this case isnon-conducting, and two electrodes (l which may he IHUVGtl togetherrelatively to the mold, so as The (O5 electrodes shoulc. preferably beheld at an angle, as shown, so that they will reflect the heat downwerrlupon the materiel to be fused or softened. The-foundation or core isformed in substentielly the same manner as hereinbefore described, andthen l apply fresh material adjacent to the edge of the core orfoundation end-shift the are so that it Will apply heat to the adjacentportions of the foundation and of the new material, thus causing the twoportions of the material to fuse together or coalesce. Theedded n1a.-teriel may either be conhnin'uted, es in, the case first described, or,and this is preferable in many cases, the material to be added is firstfused so as to form a solid coherent mass or piece, which is then placedscent to the foundation or core. The advantage of this procedure is thstit reduces the-liability of the fused materials sticking to the mold.

While I have described the carrying out of my invention by the formationof e central foundation or core followed by the gredusl building up ofthe article from the outer edge of said core, I do not restrict myselfto this specific procedure. Sever-s1 superposed layers of material maybe connected by fusion, hereinhefore described, end the building up mayproceed inwerd as well as outward if the foundation is given a propershape for this purpose.

The srticles ere generelly hollow, as when is; dished mold isemployed;but my inyen.

tion is also applicable to the manufacture of flat or solid articles.

in the manner elooye described I can manufacture very strong. sticlesfrom meteriel which it is difiicnlt to for suchyurposes according to theV recesses known utherto. Vfhen using hignly-sihcious roe terisl, as iprefer to do, the resulting articles e not only very present glazedsurface and strong, lTiliZ are little to week by acids end are whollycannot only steed high teniyoersturesbnt their coefficient of expansionso mell that article of this clisreet it may he stee to c very hightemperature and innnedistely plunged into cold water Without sufferingmy injury. A *ticles made of this material in the manner hereinnbovedescribed are therefore psrtie ulerly suited for use in many chemicalproocsses. They also present, as OOIIlPitlGCiQVitl'i platinum vessels,the advantage of considerable cheepness, and also that ther isprectioslly no loss due to wear.

I claim as my invention-- 'l. The herein-described process ofmanufacturing articles from quartz and analogous materiel infusible atordinary furnace ternper-stores which consists in providing 2 centralbody of loose coinminuted materiel, heating said body so as to softenit, endcause it to form a coherent core, and thenspplying new materialeXteriorly-of said; core and subjecting said nmteriel to s fusing heatin a line Winch extends spirally from; the outer edge of the core.

2. The herein-described method of menu. fecturinq' quarts vessels whichconsists in fusing :1 body of comminnted quartz so to form it into acoherent foundation and then applying an additional amount of loosecomminuted material along the edge of said foundation and subjectingsuch new metu rial to a, fusing heat.

3. The herein-described process of menufscturing a hollow article from.qusrtz, which consists in providing body of comminuted uerts, thensoftening the some by heat, t iereby causing its particles to sticktogether and form. it foundation, and finally gradually softening byheat fresh met 'e-l clone the edge of said foundation, until saidarticle is completed.

in testimony whereof I have signed my nsme to this specification in thepresence of two subscribing Witnesses.

